package simple.array;

/**
 * @Desc <a href="https://leetcode.cn/problems/reverse-string/">344. 反转字符串</a>
 * 编写一个函数，其作用是将输入的字符串反转过来。输入字符串以字符数组 s 的形式给出。
 * 不要给另外的数组分配额外的空间，你必须原地修改输入数组、使用 O(1) 的额外空间解决这一问题。
 * 示例 1：
 *   输入：s = ["h","e","l","l","o"]
 *   输出：["o","l","l","e","h"]
 * 示例 2：
 *   输入：s = ["H","a","n","n","a","h"]
 *   输出：["h","a","n","n","a","H"]
 * 提示：
 *   1 <= s.length <= 105
 *   s[i] 都是 ASCII 码表中的可打印字符
 * @Date 2023/2/7 1:21
 * @Created by 刘学松
 */
public class 反转字符串 {
    public void reverseString(char[] s) {
        int l = 0, r = s.length - 1;
        while (l < r) {
            char temp = s[l];
            s[l++] = s[r];
            s[r--] = temp;
        }
    }
}
